document.write( "Question 1056683: mike is three times as old as his little sister, Mary. in 4 years, he will be twice as old as Mary. how old is Mary?
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Algebra.Com's Answer #671761 by Alan3354(69443)\"\" \"About 
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mike is three times as old as his little sister, Mary. in 4 years, he will be twice as old as Mary. how old is Mary?
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\n" ); document.write( "4 years is the difference between 3x and 2x as old.
\n" ); document.write( "--> 12 & 4 now
\n" ); document.write( "16 & 8 in 4 years
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